cd pkgsrc/devel/glib
bmake 
....
===> *** '/usr/pkg/sbin/download-vulnerability-list'.
===> Creating toolchain wrappers for libtool-base-1.5.10nb9
/bin/sh: -c: line 1: syntax error near unexpected token `)'
*** Error code 2

Very much the same as lang/perl58 at devel/libtool-base.

Adding one line on the file:
/Volume/packages/pkgsrc/devel/libtool-base/work.harry/.wrapper/tmp/arg-pp-darwin-gcc

#!/bin/sh

will change the situation: ?? NO, wrong observation.